The most critical component in erecting a safe railing system is the proper attachment of the Stanchion to the substrate. CRL has engineered these Stanchions for residential or commercial applications of our Elevated Glass Railing System. CRL’s EGR Stanchions are designed for core-mounted installations in concrete. When installing the 5 inch (127 millimeter) Stanchions the minimum embedment depth is 3 inch (76.2 millimeter), giving you a 2 inch (50.8 millimeter) clearance under the Elevated Base Shoe. NOTE: Use CRL Cat. No. SHCS12X34 Socket Head Cap Screws to properly secure the Base Shoe to the Stanchion. All Stanchions must be installed onto the concrete substrate before the Base Shoe can be set in place with Socket Head Cap Screws. Installation instructions are included.